无氧喷雾干燥法制备绣球菌超微粉工艺研究  

STUDY ON PREPARATION OF SPARASIS CRISPA SUPERFINE POWDER BY ANAEROBIC SPRAY DRYING

作　　者：陈为健 张梅[1] 江丽芳[1] 张于弛 CHEN Wei-jian;ZHANG Mei;JIANG Li-fang;ZHANG Yu-chi(Department of Materials and Chemical Engineering,Minjiang University,Fuzhou,Fujian,350108,China)

机构地区：[1]闽江学院材料与化学工程学院,福建福州350108

出　　处：《化学工程与装备》2022年第9期10-14,共5页Chemical Engineering & Equipment

摘　　要：本文以新鲜绣球菌为原料,在单因素试验基础上,以超微粉集粉率为指标,采用L9(34)正交试验设计优化无氧喷雾干燥法制备绣球菌超微粉的工艺条件,同时对超微粉进行表征分析。结果表明绣球菌超微粉制备最佳工艺为:助干剂(麦芽糊精)添加量为3.0%,氮气进风温度为190℃,物料固液比1:3,进料蠕动泵转速9rpm,在此工艺条件下,绣球菌超微粉集粉率达到51.91%。正交试验极差分析表明影响集粉率的主次顺序为:氮气进风温度>物料固液比>蠕动泵转速>助干剂用量。对绣球菌超微粉的扫描电镜分析表明无氧喷雾干燥制备的绣球菌超微粉的为近圆形、表面光滑但有凹皱,外观具有良好完整性,分散性良好,激光粒度分析表明,超微粉Dv(50)为17.1μm,粒径较小且分布均匀。On the basis of single factor experiment, taking the ultrafine powder collecting rate as the index,the preparation technology of Sparasis crispa ultrafine powder was optimized by the L9(34) orthogonal design and the ultrafine powder was characterized and analyzed. The results showed that the optimum conditions for the preparation technology was as follows: tthe addition amount of drying aid(maltodextrin) 3.0%, the nitrogen inlet temperature 190 ℃, the solid-liquid ratio 1:3, the peristaltic pump speed 9 rpm. Under these optimized conditions,the ultrafine powder collection rate of Sparasis crispa reached 51.91%. The range analysis of orthogonal test showed that the order factors of affecting the powder collection rate is: nitrogen inlet temperature > solid-liquid ratio > peristaltic pump speed > amount of drying aid. SEM analysis showed that the shape of the ultramicro powder prepared was were spherical particles, with the characteristics of smooth surface, no crack, but wrinkled and had good integrity and good dispersion. Laser particle size analysis showed that the Dv(50) of ultrafine powder was 17.7. μ m and the particle size was small and evenly distributed.

关 键 词：绣球菌 超微粉 无氧喷雾干燥 集粉率 

分 类 号：TS219[轻工技术与工程—粮食、油脂及植物蛋白工程]